Bicycle lock



FIG. 1 is a front view of a bicycle lock showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a right side view thereof, the left side is a mirror image;

FIG. 4 is a bottom view thereof, the top side is a mirror image;

FIG. 5 is a left, top, front perspective thereof;

FIG. 6 is a left, bottom, rear perspective thereof; and,

FIG. 7 is a right, bottom, front perspective thereof.

CLAIM The ornamental design for a bicycle lock, as shown and described.